| 放牧生态系统的种群调节：正反馈和负反馈 |
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| 引用本文： | 穆长虹 王刚. 放牧生态系统的种群调节：正反馈和负反馈[J]. 草业科学, 1992, 9(5): 63-67 |
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| 作者姓名： | 穆长虹 王刚 |
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| 作者单位： | 兰州工业专科学校 兰州730050(穆长虹)，兰州大学生物系生态室 兰州730000(王刚) |
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| 摘 要： |
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| 关 键 词： | 放牧 生态系统 植物种群 正反馈 |
THE POPULATION REGULATIONS IN GRAZING ECOLOGICAL SYSTEMS: POSITIVE AND NEGATIVE FEEDBACK |
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| Mu Changhong. THE POPULATION REGULATIONS IN GRAZING ECOLOGICAL SYSTEMS: POSITIVE AND NEGATIVE FEEDBACK[J]. Pratacultural Science, 1992, 9(5): 63-67 |
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| Authors: | Mu Changhong |
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| Abstract: | Taking the grazing ecological systems as an example, the positive and negative feedback of the density dependence population regulations was analysed. There are multiplicity of stable states in herbage popula-tions owing to the influences of intraspecific mutualism, feeding rate and density of herbivores. The pos-itive feedback leads to the divergence to the multipoints, whereas negative feedback maintains one. On basis of the multiplicity of stable states of populations, there are steady multipoints in whole grazing ecological systems. |
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| Keywords: | positive feedback negative feedback intraspecific mutualism feeding rate |
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